Superheat fills the area with intense heat for a fraction of a second, vaguely like fireball. Unlike fireball, the heat does not last long enough even to deal any damage or ignite flammable materials. The intensity, however, is high enough to destroy the properties of cold iron caught in the blast (including cold iron stored in extradimensional spaces, unless the opening is sealed), causing weapons made of it to no longer bypass the appropriate damage reduction. Cold iron equipment affected by this spell can be restored with spells such as make whole.